Author/Authors :
Sohbatzadeh, Farshad university of mazandaran - Science Faculty - Department of Atomic and Molecular Physics, بابلسر, ايران , Mirzanejhad, Saeed university of mazandaran - Science Faculty - Department of Atomic and Molecular Physics, بابلسر, ايران , Mahdavi, Hoda university of mazandaran - Science Faculty - Department of Atomic and Molecular Physics, بابلسر, ايران , Omidi, Zahra university of mazandaran - Science Faculty - Department of Atomic and Molecular Physics, بابلسر, ايران
Abstract :
In this paper, uniform argon glow discharge at atmospheric pressure in a diffuse mode driven by a 300-W radiofrequency (13.56 MHz) power supply based on dielectric barrier discharge was investigated. In this work, the effect of the parasitic capacitor on the electrical characteristics of the capacitively coupled atmospheric pressure plasma was investigated. It was revealed that more than half of the RF current is parasitic in our system as a characteristic of the capacitively coupled plasma. It was also proved that the discharge resistance and sheath capacitance increase at higher input powers while the impedance decreases. In order to recognize plasma, optical emission spectroscopy apparatus was used. Argon, oxygen, copper, and nitrogen spectrum lines were diagnosed. The plasma gas temperature and electronic excitation temperature were investigated showing a non-equilibrium discharge.
